From 602a971a2af3a685d625c912c400cadd452718b1 Mon Sep 17 00:00:00 2001 From: Victor Stinner Date: Tue, 4 Aug 2020 02:40:10 +0200 Subject: [PATCH] bpo-41467: Fix asyncio recv_into() on Windows (GH-21720) On Windows, fix asyncio recv_into() return value when the socket/pipe is closed (BrokenPipeError): return 0 rather than an empty byte string (b''). --- Lib/asyncio/windows_events.py | 2 +- .../next/Library/2020-08-04-00-20-30.bpo-41467.Z8DgTL.rst | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) create mode 100644 Misc/NEWS.d/next/Library/2020-08-04-00-20-30.bpo-41467.Z8DgTL.rst diff --git a/Lib/asyncio/windows_events.py b/Lib/asyncio/windows_events.py index c07fe3241c56..a6759b78bd80 100644 --- a/Lib/asyncio/windows_events.py +++ b/Lib/asyncio/windows_events.py @@ -469,7 +469,7 @@ class IocpProactor: else: ov.ReadFileInto(conn.fileno(), buf) except BrokenPipeError: - return self._result(b'') + return self._result(0) def finish_recv(trans, key, ov): try: diff --git a/Misc/NEWS.d/next/Library/2020-08-04-00-20-30.bpo-41467.Z8DgTL.rst b/Misc/NEWS.d/next/Library/2020-08-04-00-20-30.bpo-41467.Z8DgTL.rst new file mode 100644 index 000000000000..f12693e11763 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2020-08-04-00-20-30.bpo-41467.Z8DgTL.rst @@ -0,0 +1,3 @@ +On Windows, fix asyncio ``recv_into()`` return value when the socket/pipe is +closed (:exc:`BrokenPipeError`): return ``0`` rather than an empty byte +string (``b''``). -- 2.47.3